We gain 20 IQ points advising others but lose 20 advising ourselves. 'Deep sparring'—collaborative problem-solving with trusted peers—leverages this effect. A few hours of this per quarter provides outside perspective that can break through personal biases more effectively than weeks of isolated work.

The NBA fosters a community where marketing leaders from competing teams openly share ideas. Because teams primarily operate in different local markets, they are not direct commercial rivals. This "coopetition" allows them to learn from each other's successes and failures, elevating the marketing of the entire league.

Norway's top sports center functions as a meeting place where athletes, coaches, and scientists from different sports share knowledge daily. This intentional cross-pollination of ideas and creation of a tight-knit community is a unique advantage that larger, more siloed systems envy and struggle to replicate.

The constant movement of researchers between top AI labs prevents any single company from maintaining a decisive, long-term advantage. Key insights are carried by people, ensuring new ideas spread quickly throughout the ecosystem, even without open-sourcing code.

In an era where information is commoditized by AI, there's no longer such a thing as protected intellectual property. Businesses that generously share their expertise will build trust and attract clients. Customers hire experts for implementation, not just to acquire knowledge, so the fear of giving away too much is unfounded.

Nelson Dellis became a national memory champion in just one year. He attributes this rapid ascent not only to hard work but also to the fact that memory sports are a relatively new field with fewer competitors. This makes the path to the top less congested than in established domains like tennis or chess.

Research on eldest siblings reveals a "coaching effect": the act of teaching a skill to someone else reinforces your own understanding and builds confidence. High-performing teams, like those in the CIA, foster environments where members constantly coach each other.

Contrary to the instinct to hoard proprietary information, sharing ideas openly acts as a strategic tool. As seen with Pixar and institutional funds, it attracts engaged talent and creates a public dialogue. This provides invaluable feedback that refines and improves the original concept.

The next frontier of competitive advantage in AI may not be public models, but proprietary 'bootleg skills'—custom markdown files—shared within trusted circles. Gatekeeping these unique, highly effective prompts and workflows could become a significant personal or corporate moat in a world of commoditized AI.